在Windows应用中添加eDrawings2018 Viewer时找不到COM组件求助

Hey there, let's tackle this eDrawings 2018 Viewer component issue head-on. I’ve dealt with similar COM component visibility problems before, so here are actionable steps to get that control showing up:

• Register the DLL manually
  Copying the DLL alone doesn’t register it in the Windows registry, which is required for COM components to appear in Visual Studio. Do this:

  1. Right-click Command Prompt and select Run as administrator
  2. Execute this command:
     regsvr32 "C:\Program Files\Common Files\eDrawings2018\EModelView.dll"
  3. You’ll get a pop-up confirming successful registration—restart Visual Studio afterward and check the COM components list again.

• Repair or re-install eDrawings with API components
  It’s possible your initial eDrawings install skipped the necessary COM/API components. Re-run the eDrawings 2018 installer:

  1. Choose the Repair option, or go into Custom Installation
  2. Make sure you check boxes for "eDrawings API" or "COM Components" (labeling might vary slightly)
  3. Complete the repair/re-install, then restart Visual Studio.

• Match platform architecture
  COM components are sensitive to 32/64-bit mismatches:

  • If you installed 64-bit eDrawings, set your Visual Studio project’s target platform to x64 (Project Properties → Build → Platform target)
  • For 32-bit eDrawings, use x86 instead
    Also ensure you’re running the correct version of Visual Studio (32/64-bit) that matches your eDrawings install.

• Manually browse for the DLL
  If the component still doesn’t show up in the COM list, force-add it:

  1. Go to Toolbox → Right-click → Choose Items → COM Components tab
  2. Click the Browse button
  3. Navigate to C:\Program Files\Common Files\eDrawings2018\ and select EModelView.dll
  4. The eDrawings control should now appear in the list—check it to add it to your toolbox.

• Run Visual Studio as Administrator
  Sometimes VS lacks the permissions to read registry entries for COM components. Close VS, right-click its shortcut, select Run as administrator, then try accessing the COM components list again.

内容的提问来源于stack exchange，提问作者Rahul Sutar